Hi, It is possibly a virus, but I would think that a dodgy program instal is the culprit. What O.S. are you using and have you installed any updates or programs recently? Some updates can affect some machines in wierd ways. Cheers, Bill

Thanks for replying....Im using XP pro but unfortunately couldn't tell you whats changed other than the regular windows updates. Infact when it first started I reloaded XP from scratch but its still happening. Could the bios battery be going flat....it is 1 and half old and isn't left on all day?